A student uses a ruler to determine the circumference of a wooden dowel. She puts a mark onto the dowel, then rolls it along the ruler three times, before reading the position on the
ruler at which it stopped.
What is the circumference of the dowel?
- attachment
Starting
Final
position
position
Mark on can
can rolled
0
5 10
15
20
25
30
35
40
o
A
12 cm
OB 12.3.com
Oc. 37 cm
O
D

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

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First to answer will be the brainliest i need the answer asap